IT topics

1. Main objects and concepts of informatics:Informatics – a branch of science that analyses methods and laws of information creating, storing, transferring and processing using technical means. The term was begun to use at the 7-th decade in Europe. Informatique ═ information + automatique. Computer science is treated as theorethical trend of informatics and computer engineering – its technical trend. Computer science investigates information features and laws of information processes. Computer engineering deals with compuer hardware and information technologies. Cybernetics – a science about the main control principles in various systems (technical, biological, social). Control is based on information.Cybernetics is interested only in control information, but means of its processing may be any. Information technologies – application of computer science methods to solve practical tasks of information search, storing, saving, processing and presenting using technical means. The main technical equipment of information technologies is computer hardware. Algorithm is a set of strictly and uniquely defined operations with data that give meaningfull result.
• Finite – all operations are to be finished after finite number of steps.
• Determined – data and results of each step must have one meaning.
• Data – used from some permissible set.
and must be passed to the user.
• Effective – each step of an algorithm must be executed during finite time.
Computer software is an algorithm written in some programming language. An algorithm theory and mathematical logic form theorethical computer basis that enables to solve all the problems which can be described using algorithms.
2. Measurement of information: It is possible to treat that received information is equivalent to decrease of uncertainty. Suppose, we can send one of N possible messages. All possible set is known for recipient, but he didn’t know which one will be sent. Uncertainty can be expressed by some function E(N). When N ═ 1, there...

Daugiau informacijos...

★ Klientai rekomenduoja

Šį rašto darbą rekomenduoja mūsų klientai. Ką tai reiškia?

Mūsų svetainėje pateikiama dešimtys tūkstančių skirtingų rašto darbų, kuriuos įkėlė daugybė moksleivių ir studentų su skirtingais gabumais. Būtent šis rašto darbas yra patikrintas specialistų ir rekomenduojamas kitų klientų, kurie po atsisiuntimo įvertino šį mokslo darbą teigiamai. Todėl galite būti tikri, kad šis pasirinkimas geriausias!